Junction-box for electrical conductors



J. F. BURNS JUNGTION BOX FDR ELECTRICAL UONDUGTORS.

APPLIGATIOH FILED SEPT. so, 1906.

927,21 9. Patented July 6, 1909.

3 SHEETS-EH33? 1.

INVENTOH':

$76946? Malar a/19m I J. r. BURNS. JUNCTION BOX FOB ELECTRICAL GONDUGTORS.

APPLICATION FILED SEPT. 30, 1908.

SSHEETS-SHEBT 2.

92732 19, I Patented July 6,1909.

J. F. BURNS.

JUNCTION BOX FOR ELEOTRIGAL GONDUOTORS.

. APPLICATION FILED SEPT. 30, 1908. 927,219, Patented July 6, 1909.

' RED 2 27 a; 28-" 4 Jig w v I INVENTOR: i T H/VZISI'IBUIP/KS} U ITED s'mraspa rnnr orrrca.

JAMES F. BURNS,

JUNCTION-.8 X FOR ELECTRICAL Application filed September 30, 1908.

OF PHILADELPHIA,

Specification of Letters Patent.

PENN SY LVAN IA oonnuo'rons Patented July 6, 1909.

Serial No. 455,476.

'onductors, whereoi the following is a specification, reference being had to the accomparrying drawings.

1 Mylbirnprovernent is'particularly applicable to w; t are known as elbow fittings, and it is the object thereof to provide such a box,

, which may be connected in either right or of the box; removable covers for vrn. Fig. x,

left hand relation with the conduit, with the advantage that a single pattern of box construoted in accordance with my improvement may be substituted for two respectiveiy right and left hand patterns of boxes heretofore required.

As hereinafter described, my invention comprises a box. having sockets for conduits with axes in right angu ar relation, and openings between said sockets upon opposite sides said openings'and means arranged to dctachably retain said covers in rigid relation; it being understood hat one or the other of said ehvers is removed to afford access to the interior 0 the box in accordance with its position in right or left hand relation to the conduit.

My invention comprises the various novel features of construction and arrangement hereinafter more definitely specified.

In said drawings; Figure l, is a side elevaion of a box conveniently embodying my im rovernent. Fig. 11, isa central, longitu inal, sectional view of the box shown in Fig. I. Fig. 111, is a transverse sectional view of said box taken on the line 111, III in Fig. II. Fig. IV, is a plan edge view-of one of the cover plates shown in section in Fig. 111. Fig. V, is a side elevation of a box embodying a modified fOIHl of my invention. Fig. V1, is an inverted plan view oi the box shown in Fig. V of the cover plate shown in Fig. V, rovided with insulating bushings. Fig. V II, is a side elevation of a box similar to Fig. V, embodying a cover plate similar to the cover plate shown in Fig. VII, but provided with a-sin le insulating l hing. Fig. 1X, is an inverted plan view .he box shown in Fig. is a transverse vertical sectional view taken on the lines X, X in Figs. VIII and IX. Fig. X1 is an edge view ot a cover plate formed wholly oi. ceramic.

Referring to Fig. VII, is an edge view,

shown in Figs. l to l\",.inclusive, l is the box having screw threaded sockets 2 and 3, to receive conduits with their axes in right angular relation. Said box has openings be? tween said sockets upon opposite sides rcspectivcly provided with removable covers 5, which are detachably retained in rigid relation with the box. by screws through apertures 7, in said covers in screw threaded engagement with lugs S and 9. Referring to Fig. i, it may he observed that the lugs 8 and 9, which are respectively upon opposite sides of the box are disposed in staggered relation so that covers of precisely the same form may be fitted upon the respectively opposite sides of the box.

Referring to the form of my invention shown in Figs. V to VII inclusive, the box 10, has screw tln'etulcd sockets 11. and 12, to receive conduits with their axes in right angular relation, and said box has openings bei that a cover 35,

the form of my invention tween said sockets upon opposite sides respectively provided with removable rovers i i,

and 15, which are detachably retained in rigid relation with the box by screws 16 and 17, extending through apertures 18 and 19, in said covers in screw tlu'oaded engagement with respective lugs 21 and 22.

As shown in Figs. V and VI, the cover 15, is not provided with any outlets, but it is to be understood that the cover 25, shown in Fig. Vii, may be substituted for said cover 15, and comprises outlets 26, respectively provided with insulating bushings 27, con-- veniently formed of ceramic, provided with means distinct from said cover, arranged to detachably retain said bushings and com prising the spring clips 28, arranged. to detachably engage the recesses 29, in said bushings.

As shown in Figs. VIII, IX and X, the box 10, is provided with a cover plate 3?, similar to the cover plate 25, but having a singleoutlet 33, provided with the bushing 27, which is retained by the spring clip 28.

It is to be understood that the covers 5, shown in Figs. 1 to 1V inclusive, may also be provided with suitable outlets and insulating ushings such as are shownin Figs. IX and X. Moreover, it is to be understood formed wholly of ceramic and having one or more outlets 36, may be substituted for the outlet covers above e-- scribed.

it may be observed that regardless oi the position of the elbow fittings above described,

6, extending VILVIH,

. covers with which they are provided, so that access may be had to the interior thereof through one or the other of the removable electrical conductors may be readily drawn through one and directed through the other of said conduits. Moreover drop connections may be made directly from such a box through an outlet or outlets in one or the other of the covers thereof, withoutthe employment of a separate outlet box.

I do not desire to limit myself to the precise details of construction and arrangement herein set forth, as it is obvious that various modifications may be made therein without departing l'rom the essential features n invention as defined in the appended claims.

I claim 1. An elbow fitting having screw threaded sockets for conduits in right angular relation, and counterpart openings between said sockets upon opposite sides; interchangeable covers for said openings; means arranged to detachablyretain said-covers in rigid relation; a removable bushing, having a recess, in one of said covers; and, means distinct from said cover, arranged to detachably retain said bushing therein, comprising a spring clip arranged to engage the recess in said bushing.

2. An elbow fitting having screw threaded sockets for conduits whose axes intersect, and openings between said sockets upon opposite sides; removable covers for said openings; means arranged to detachably retain said covers in rigid relation; a removable bushing, having a recess, in one of said covers; and, means distinct from said cover, arranged to detachably retain said bushing therein, comprising a spring clip arranged to engage the recess in said bushing. I

openings between said. socketsupon opposite sides respectively parallel with the "3X15 of one oi said sockets; removable overs for said openings; and, means arranged to detachably retain said covers in rigid relation.

5. An elbow fitting having sockets for conduits in angular relation to each other,.and openings between said sockets upon opposite sides; removable covers for said openings; and means arranged to. detacliably retain said covers in rigid relation.

6, An elbow fitting having sockets for conduits in angular relation to each other, and openings between said sockets upon opposite sides respectively parallel with the axis of one of said sockets; removable covers for said openings; lugs in each of said openings, the lugs in each opening being in staggered relation to the lugs in the other opening; and, means arranged to respectively detachably connect said covers in rigid relation with said lugs. Y

in testimony whereof I have hereunto signed my name at Philadelphia, Pennsylvania, this twenty-ninth day of September JAMES F. BURNS, Witnesses J GEN H. BAKER, CLARENCE W. Salon. 

